Patent US3662700A successfully refreshed from Google Patents.
US3662700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating hull to maintain a cushion of air
Assignee: Individual
•
Filing: 1970-04-16
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Granted: 1972-05-16
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Expires: 1990-04-16
Abstract
Abstract A floating hull is provided with an elongated tunnel on the bottom surface thereof the forward end of which may be terminated by a bulkhead. The heart of the tunnel may gradually diminish toward the stern of the boat or the heart of the tunnel may be constant from the bulkhead to the stern of the boat. An air intake opening is placed at the bow of the hull above the normal water-line of the boat and is disposed in communication with the tunnel in the vicinity of the bulkhead defining the forward end of the tunnel.
Inventors
- 👤 Leon Roumejon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:08
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/32; B63B1/34; B63B1/38; Y; Y02; Y02T; Y02T70/00; Y02T70/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
84 words
A floating hull having an underside adapted to be submerged when the hull is fulfilling its normal function, a tunnel formed in said underside having an inverted V-shaped section throughout the length thereof, a transverse bulkhead disposed at the forward end of said tunnel, said bulkhead being provided with an opening adjacent the apex of the inverted V-shaped tunnel, an air intake opening formed in the fore end of said hull, and a vent extending between said openings to conduct air to said tunnel.
Claim 2
Dependent Claim
84 words
A floating hull having an underside adapted to be submerged when the hull is fulfilling its normal function, a tunnel formed in said underside having an inverted V-shaped section throughout the length thereof, a transverse bulkhead disposed at the forward end of said tunnel, said bulkhead being provided with an opening adjacent the apex of the inverted V-shaped tunnel, an air intake opening formed in the fore end of said hull, and a vent extending between said openings to conduct air to said tunnel.
Claim 3
Dependent Claim
22 words
A floating hull according to claim 1, in which the depth of the tunnel deceases continuously towards the aft of the hull.
Claim 4
Dependent Claim
29 words
A floating hull according to claim 1, in which the depth of the tunnel is constant through its length, the tunnel opening at the aft end of the hull.
Claim 5
Dependent Claim
17 words
A floating hull according to claim 1, in which a non-return valve is fitted in the vent.
Claim 6
Dependent Claim
65 words
A floating hull according to claim 1, in which the air intake opening of the vent is situated at the fore end of the hull below what is the water-line when the hull is motionless on the water, the arrangement being such that the opening is above the water level when the hull rises up at the fore end due to the effect of speed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |